106 lines
3.4 KiB
Python
106 lines
3.4 KiB
Python
from fastapi import FastAPI, HTTPException, Depends
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.staticfiles import StaticFiles
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from fastapi.responses import FileResponse
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import requests
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import os
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import pandas as pd
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app = FastAPI(title="Trading Dashboard API")
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app.add_middleware(
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CORSMiddleware,
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allow_origins=["*"],
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allow_methods=["*"],
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allow_headers=["*"],
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)
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# Serve static files
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app.mount("/static", StaticFiles(directory="dashboard/public"), name="static")
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@app.get("/")
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async def read_index():
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return FileResponse('dashboard/public/index.html')
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DB_USER = os.getenv("DB_USER", "admin")
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DB_PASSWORD = os.getenv("DB_PASSWORD", "quest")
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DB_AUTH = (DB_USER, DB_PASSWORD) if DB_USER and DB_PASSWORD else None
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DB_HOST = os.getenv("DB_HOST", "questdb")
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@app.get("/api/trades")
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async def get_trades(isin: str = None, days: int = 7):
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query = f"select * from trades where timestamp > dateadd('d', -{days}, now())"
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if isin:
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query += f" and isin = '{isin}'"
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query += " order by timestamp asc"
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try:
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response = requests.get(f"http://{DB_HOST}:9000/exec", params={'query': query}, auth=DB_AUTH)
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if response.status_code == 200:
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return response.json()
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throw_http_error(response)
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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@app.get("/api/metadata")
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async def get_metadata():
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query = "select * from metadata"
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try:
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response = requests.get(f"http://{DB_HOST}:9000/exec", params={'query': query}, auth=DB_AUTH)
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if response.status_code == 200:
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return response.json()
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throw_http_error(response)
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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@app.get("/api/summary")
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async def get_summary():
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# Coalesce null values to 'Unknown' and group properly
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query = """
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select
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coalesce(m.continent, 'Unknown') as continent,
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count(*) as trade_count,
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sum(t.price * t.quantity) as total_volume
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from trades t
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left join metadata m on t.isin = m.isin
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group by continent
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"""
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try:
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response = requests.get(f"http://{DB_HOST}:9000/exec", params={'query': query}, auth=DB_AUTH)
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if response.status_code == 200:
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return response.json()
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throw_http_error(response)
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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@app.get("/api/comparison")
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async def get_comparison(days: int = 7):
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# Aggregated volume per exchange per day
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# QuestDB date_trunc('day', timestamp) is good.
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# We ensure we get exchange, day, and metrics.
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query = f"""
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select
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exchange,
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date_trunc('day', timestamp) as day,
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sum(price * quantity) as daily_volume,
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count(*) as trade_count
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from trades
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where timestamp > dateadd('d', -{days}, now())
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group by exchange, day
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order by day asc
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"""
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try:
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response = requests.get(f"http://{DB_HOST}:9000/exec", params={'query': query}, auth=DB_AUTH)
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if response.status_code == 200:
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return response.json()
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throw_http_error(response)
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except Exception as e:
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raise HTTPException(status_code=500, detail=str(e))
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def throw_http_error(res):
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raise HTTPException(status_code=res.status_code, detail=f"QuestDB error: {res.text}")
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(app, host="0.0.0.0", port=8000)
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